Introduction
In the ever-growing urban landscape of Los Angeles, Accessory Dwelling Units (ADUs) have become an essential tool to combat housing shortages and create affordable living options. Whether you're looking to build an ADU as a rental unit, a guest house, or to provide housing for a family member, it’s crucial to understand the steps, rules, and regulations for building an ADU in Los Angeles County's unincorporated areas. The process might seem daunting at first, but with the right information, it’s possible to navigate it efficiently.
This guide walks you through everything you need to know about building an ADU in Los Angeles County's unincorporated areas, including zoning requirements, design guidelines, and the permitting process.
What is an Accessory Dwelling Unit (ADU)?
An Accessory Dwelling Unit (ADU), also known as a granny flat, in-law unit, or secondary suite, is a self-contained residential unit that is located on the same property as a primary home. ADUs have become increasingly popular in Los Angeles due to their potential to offer affordable housing and additional rental income.
Key Benefits of ADUs in Los Angeles County Unincorporated Areas
Affordable Housing: ADUs provide a more affordable housing option for tenants while offering homeowners an opportunity to earn rental income.
Increased Property Value: Building an ADU can significantly increase the value of your property.
Flexibility: ADUs can serve as guest houses, home offices, or living spaces for family members.
Sustainability: ADUs contribute to reducing urban sprawl, making better use of existing infrastructure, and promoting sustainability.
Appendix IV: Step-by-Step Guide to Building ADUs in Los Angeles County Unincorporated Areas
Step 1: Understand Zoning and Land Use Requirements
The first step in building an ADU is understanding whether your property is eligible for an ADU. Los Angeles County has specific zoning regulations that dictate where ADUs can be built. Here are some of the key zoning requirements:
Zoning Designation: ADUs are typically allowed in residential zones, but you need to confirm the zoning designation for your property through the Los Angeles County Department of Regional Planning.
Lot Size and Setbacks: The size of the lot and the required setbacks (distance from property boundaries) will influence where you can place an ADU.
Height Limits: There are height restrictions for ADUs, which are generally between 16 to 25 feet depending on the type of ADU and its location.
Step 2: Review ADU Design and Construction Guidelines
Once your property is confirmed eligible, you’ll need to familiarize yourself with the design and construction guidelines for ADUs. Some key considerations include:
Size Limits: The maximum size for an ADU in Los Angeles County is 1,200 square feet, depending on your lot size and zoning district.
Parking Requirements: ADUs typically do not require additional parking if they are located within half a mile of public transit.
Building Codes: All ADUs must adhere to Los Angeles County's building codes and safety standards.
Step 3: Check for Utility Connections
ADUs must have access to essential utilities such as water, sewer, electricity, and gas. If your property is not already connected to these utilities, you will need to make arrangements with local providers.
Step 4: Submit Your Plans to the Department of Regional Planning
After finalizing your ADU design, the next step is to submit your building plans to the Los Angeles County Department of Regional Planning for review. The following documents will likely be required:
Site Plan: A detailed drawing of your property showing the location of the primary dwelling and proposed ADU.
Floor Plans: Detailed floor plans for the ADU, including dimensions, and information about rooms and amenities.
Elevation Plans: Drawings showing the exterior of the ADU from all sides.
Structural Plans: Engineering documents detailing the structural integrity of the proposed ADU.
Step 5: Apply for Necessary Permits
Once your plans are approved, you will need to apply for the necessary permits. The common permits required for an ADU project include:
Building Permit: Issued by the Los Angeles County Building and Safety Department.
Plumbing Permit: If your ADU will be connected to water and sewer systems.
Electrical Permit: For any electrical work or wiring needed.
Step 6: Construction and Inspections
Once permits are obtained, you can begin construction on your ADU. The process will involve various stages, including excavation, framing, electrical and plumbing installation, and finishing. During construction, periodic inspections by the county’s inspectors will be necessary to ensure that the work meets safety standards and complies with the approved plans.
Step 7: Final Inspection and Certificate of Occupancy
Once construction is complete, you’ll need to schedule a final inspection to ensure that everything complies with the approved plans and building codes. If the inspection is successful, you’ll receive a Certificate of Occupancy, allowing you to legally inhabit the ADU.
Common FAQs About Building ADUs in Los Angeles County Unincorporated Areas
Q1: Can I rent out my ADU?
Yes, you can rent out your ADU. Many homeowners use ADUs as a source of rental income. However, the ADU must comply with local zoning laws and housing regulations.
Q2: What is the cost of building an ADU?
The cost of building an ADU varies based on factors such as size, design, materials, and location. On average, building an ADU in Los Angeles County may cost between $100,000 and $300,000.
Q3: Can I build an ADU on a property with an existing ADU?
In some cases, you may be able to build a second ADU on a property that already has an existing one. However, this depends on the lot size, zoning, and available infrastructure. Always consult with the Los Angeles County Department of Regional Planning.
Q4: Do I need to provide parking for my ADU?
If your property is located near public transportation (within half a mile), parking is generally not required. However, if your property is far from transit, parking requirements may apply.
Q5: Can I build a two-story ADU?
Yes, you can build a two-story ADU, but it must adhere to height restrictions. The allowable height varies based on zoning and the type of ADU you plan to build.
Conclusion
Building an Accessory Dwelling Unit (ADU) in the unincorporated areas of Los Angeles County can be a rewarding investment for homeowners. By following this step-by-step guide, you’ll be equipped with the knowledge needed to navigate the zoning, design, permitting, and construction processes. Always ensure that your ADU complies with local building codes and regulations, and work closely with the Department of Regional Planning to ensure a smooth project.
Whether you’re building for additional income, housing family members, or creating extra space, an ADU can enhance your property and contribute to solving Los Angeles’ housing crisis.
